Top cover of battery box



FIG. 1 is a perspective view of a top cover of battery box;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a right side view thereof;

FIG. 8 is a perspective view thereof, shown in environmental use; and,

FIG. 9 is a perspective view thereof, shown in another environmental use.

In the drawings, the broken lines illustrate portions of the article that form no part of the claimed design. 

CLAIM The ornamental design for a top cover of battery box, as shown and described. 